單軌工作車動力系統(tǒng)分析計算與校核（本科畢業(yè)論文設(shè)計）

摘 要

本課題所涉及的單軌工作車是重慶市軌道交通三號線一期工程線路設(shè)施維護(hù)所需的專用單軌車輛。該工作車的成功應(yīng)用必能極大地方便重慶輕軌線路的日常維護(hù)，保證輕軌列車安全、穩(wěn)定地運行。
本文主要對單軌工作車的動力系統(tǒng)進(jìn)行了研究，具體有三個方面的內(nèi)容。
首先是工作車動力系統(tǒng)總體方案的分析和設(shè)計。根據(jù)該項目對工作車動力系統(tǒng)的要求，本文選取內(nèi)燃機(jī)作為動力源，并配以液壓驅(qū)動系統(tǒng)。液壓驅(qū)動系統(tǒng)由變量泵、變量馬達(dá)和減速機(jī)組成。為保證運行速度和雙向行走，工作車的驅(qū)動方式采用前后輪同時驅(qū)動。即液壓驅(qū)動系統(tǒng)的具體方案為：一個液壓泵+兩套液壓馬達(dá)和減速機(jī)。
然后，本文對工作車的受力進(jìn)行了分析和計算，并根據(jù)計算結(jié)果對驅(qū)動系統(tǒng)各組件進(jìn)行選型。其中主要對工作車的整體阻力進(jìn)行了分析，并最終計算出最大的阻力功率。有了阻力功率就可以據(jù)此選擇內(nèi)燃機(jī)的具體型號，接著就可以選出變量泵和變量馬達(dá)。最終，本文的具體選型結(jié)果為：動力源選用濰柴WD12系列柴油機(jī)，具體型號為WD12.390；變量液壓泵選擇A7V型斜軸式變量柱塞泵；變量液壓馬達(dá)選擇A6V型斜軸式變量柱塞馬達(dá)。
最后，本文對所設(shè)計的動力系統(tǒng)的驅(qū)動能力進(jìn)行了校核計算，同時計算了工作車的制動力矩，并對工作車的制動性能進(jìn)行了校核。校核計算的結(jié)果滿足工作車的動力和制動要求以及附著條件。


關(guān)鍵字：單軌，工作車，動力系統(tǒng)，計算


ABSTRACT

The monorail working vehicle, which is involved with this subject, is an special single track vehicle for the maintenance of the establishment of the NO.3 light rail line's first-stage construction in Chongqing. The successful application of the working vehicle can certainly make the daily maintenance for Chongqing's light rail line more convenience, as well as ensure the light rail train operate safely and steadily.
This article mostly research the power system of the monorail working vehicle,and including three aspect as follows.
First of all, this paper analyses and designs the general planning of the working vehicle's power system. According to the requirement of the power system, this article choose internal-combustion engine as the power producer, and matching with fluid power system. Fluid power system is formed of variable displacement pump, variable displacement motor and reductor. In order to satisfy the speed and two-way move for the working vehicle, a type of drive, which drive fore-and-aft wheel at the same time, is adopted for the working vehicle. So that the scheme of the fluid power system is: one hydraulic pump with two hydraulic motor and two reductor.
Then，the article analyses and computes the force that the working vehicle get, and base on the result to select the type of power system's subassembly. This paper mostly analyses the whole resistance on the working vehicle, and finally figure out the maximal resistance power. With resistance power, the specific type of internal-combustion engine can be fixed on, and then the type of variable displacement pump and variable displacement motor can also be fixed on. Finally，the type selected in this paper is: Power producer is WD12 diesel engine,the particular type is WD12.390; The type of variable hydraulic pump is A7V, which is taper shaft variable plunger type pump; The type of hydraulic motor is A6V, which is taper shaft variable plunger type motor.
Lastly, the article have checked the driving capability of the power system designed in this paper, and also computed the brake torque of the working vehicle, as well as the checking of its braking performance. The result of the checking fulfil the power and braking requirement, and also accord with the accreting force condition.


Key word： Light rail, Working vehicle, Power system, Compute


目 錄

中文摘要 I
ABSTRACT II
1 緒論 1
1.1國內(nèi)外城市軌道交通發(fā)展概況 1
1.1.1國外主要城市軌道交通現(xiàn)狀 1
1.1.2中國城市軌道交通的發(fā)展現(xiàn)狀及前景 2
1.2 重慶城市軌道交通發(fā)展概況 2
1.2.1重慶輕軌車的特點 2
1.2.2 重慶軌道交通規(guī)劃藍(lán)圖 3
1.3 本課題的目的、意義及主要研究內(nèi)容 3
1.3.1本課題的目的及意義 3
1.3.2本課題主要研究內(nèi)容及本文結(jié)構(gòu)安排 3
2 單軌工作車項目綜述 5
2.1單軌工作車項目簡介 5
2.1.1重慶市軌道交通三號線工程簡介 5
2.1.2本項目概況 5
2.1.3三號線線路主要參數(shù) 5
2.2單軌工作車的用途、功能及工作條件 6
2.2.1單軌工作車的用途和功能 6
2.2.2工作條件 7
2.3單軌工作車的主要技術(shù)要求 7
2.3.1單軌工作車總體技術(shù)要求 7
2.3.2單軌工作車的組成 7
2.3.3底架 8
2.3.4車廂 8
2.3.5駕駛操作臺 8
2.3.6動力源 9
2.3.7傳動裝置 9
2.3.8制動裝置 9
2.3.9走行裝置 9
2.3.10檢修工作臺 9
2.3.11工作車主要技術(shù)參數(shù) 10
3 單軌工作車動力系統(tǒng)總體方案設(shè)計 11
3.1動力源的選取 11
3.2工作車液壓驅(qū)動系統(tǒng)的結(jié)構(gòu)設(shè)計、原理及優(yōu)點 11
3.2.1工作車液壓驅(qū)動系統(tǒng)的結(jié)構(gòu)設(shè)計 11
3.2.2工作車液壓驅(qū)動系統(tǒng)的原理 12
3.2.3液壓驅(qū)動系統(tǒng)的優(yōu)點 12
3.3工作車驅(qū)動系統(tǒng)的布置設(shè)計 13
4 單軌工作車動力系統(tǒng)的計算 15
4.1工作車主要載荷分析 15
4.1.1垂直載荷 15
4.1.2縱向載荷 15
4.1.3側(cè)向載荷 15
4.1.4制動載荷 17
4.2工作車整體阻力分析 18
4.2.1滾動阻力 18
4.2.2空氣阻力 19
4.2.3上坡阻力 20
4.2.4加速阻力 20
4.2.5轉(zhuǎn)彎阻力 21
4.2.6起動阻力 21..